Engine hard to start after water meth install

Installed w/m injection Friday night. Finished at 3am. Was driving home from my friends shop and got on it on an on ramp and it seemed fine until I let off the accelerator and the engine died. I got it started while rolling and got home. I turned off the w/m for the rest of the drive except one more pull closer to home. No issues, everything seemed to be running normal. The next day I went to start the car and it didn't just start right up like normal. I had to crank it a little. The same thing happened a couple more times after driving it for a while, but the last time that day I started it, it started up right away, just like normal. Then, the next day it sat in the garage all day, at about 7:00 last night I went to start it to go to the store and it would just turn over and over, no spuddering or trying to start. I just went out there this morning and it was doing the same thing. I ended up getting it to start by pumping the accelerator like I have to on really cold days in the winter. Once started it was running smooth like there was no issue. Does anyone have any Ideas what might be going on?

Might need a bit more info on car, engine and any other mods.

Have you VCDS scanned for fault codes?

It's a 99.5 so it has the ALH engine. I haven't checked vagcom for codes yet.

hydrolock?




Dieseleux

There's no accelerator pump like on cars with carburetors, so there's something else going on.

What tools did your buddy use to set the timing, and where on the timing graph is the timing currently set?

Nozzle drips overnight in to the inlet filling the cil. Always check youre last upgrade

Mark your tank and see where it is in the morning or disconnect the line for a day and test.

mk1-83 said:

Nozzle drips overnight in to the inlet filling the cil. Always check youre last upgrade

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x2...
Pump the accelerator? Considering your mods, wow...

FlyTDI Guy said:

x2...
Pump the accelerator? Considering your mods, wow...

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Please enlighten me.

Did you do the windsheild test before putting the nozzle into the pipe?

How are you triggering the water/meth kit?

Whose water meth kit are you using?

Are you using a solenoid or a check valve?

Where is it placed?

bgsnyder said:

Please enlighten me.

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Pumping the pedal does nothing, except add wear to the potentiometer in the pedal I guess. This practice relates back to carburetors with accelerator jets. It was a way to introduce more fuel into the intake tract if hard starting. Our diesels don't work that way. Sorry, I was having a 'moment' I guess.

Does putting the pedal to the floor cut fuel?

ocshaman said:

Does putting the pedal to the floor cut fuel?

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If the engine is running...no,
If the engine is not running...no

ocshaman said:

Did you do the windsheild test before putting the nozzle into the pipe?

How are you triggering the water/meth kit?

Whose water meth kit are you using?

Are you using a solenoid or a check valve?

Where is it placed?

Click to expand...

We did test it by putting pressure on the boost line. I am planning on dialling it back. It has a Snow Performance controller and pump and devils own injectors and check valve. It is about 4 inches back from the intake manifold, right after my MAP sensor.

I fired it right up, first time, no problem, after work yesterday. Checked the timing and it is right on the middle blue line. Any suggestions for advancing the timing, and how much?

Never had issues with W/M causing me starting issues when using it. I know my system is water tight though and water isn't dribbling in to the system when all switched off.

bgsnyder said:

Checked the timing and it is right on the middle blue line. Any suggestions for advancing the timing, and how much?

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Many people get good results by being close or on the upper line.

I think I may have gotten got by the 109 relay. Ordered a new one but re-soldered the one in the car and it has been starting every time now. Just scared me because I just installed the water meth injection and the next day started having issues.

H2O/meth injection

I am running a Snow system in my 03 Dodge RAM 2500 CTD and I turn off the system about 5 minutes prior to shutting the engine down so I do not have any pooling of spray in the intake.

Depending on how aggressive you are adding the spray you might have an issue with any remaining water in the intake after the methanol has evaporated quenching the combustion in the cylinders causing the hard start issue.

Good luck,........irondogger

Thanks for the suggestion. It turns out it was just the 109 relay. Really bad timing though. Since I re-soldered the connections it hasn't had a hiccup.